W2K DHCP leases RRAS IP to NT4WrkStn - WHY?

[OWize1]

I'm trying to do some remote administration and assign more options in DHCP, but I notice that all the NT4 Workstations are connecting through RRAS to get their IP address for some reason. Why? They are NOT picking up all the options I am assigning, but yet they continue to function with the network. Because of that, I cannot see the workstation name when I view the leased addresses list.
This is a single W2K server environment with AD active and 9 out of 12 PC's are NT4, the others are W2KPro.

Is there a configuration problem or am I my misunderstanding something?